Adjustable stovepipe.



No. 797,069. PATENTED AUG. 15, 1905.

' 0., c. A. 5; H. T. NELSON.

ADJUSTABLE STOVEPIPE. APPLICATION FILED MAR. 20, 1905.

JO 01, Ill

I, Ill/Ill H Attorneys UNITED STATES PATENT OFFICE.

CARL NELSON, CARL ALBERT NELSON, AND HARRY T. NELSON, OF BROOTEN,MINNESOTA.

Specification of Letters Patent.

Patented Aug. 15, 1905.

Application filed liarch 20, 1905. Serial No. 251,173.

To all whom it may concern:

Be it known that we, CARL NELSON, CARL ALBERT NELSON, and HARRY T.NELSON, citi- Zens of the United States, residing at Brooten, in thecounty of Stearns and State of Minnesota, have invented a new and usefulAdj ustable Stovepipe, of which the following is a specification.

This invention relates to improvements in stovepipes capable ofadjustment longitudinally, and has for its object to produce asimply-constructed and efficient device of this character whereby theseveral sections of Stovepipe may be adjusted to any required extent andsecurely locked in the adjusted position.

With these and other objects in view, which will appear as the nature ofthe inven tion is better understood, the same consists in certain novelfeatures of construction, as

hereinafter fully described and claimed.

In the accompanying drawings, forming a part of this specification, andin which corresponding parts are denoted by like designating characters,is illustrated the preferred form of embodiment of the invention capableof carrying the same into practical operation, it being understood thatthe invention is not necessarily limited thereto, as various changes inthe shape, proportions, and general assemblage of the parts may beresorted to Without departing from the principle of the invention orsacrificing any of its advantages.

In the drawings thus employed, Figure 1 is a perspective view ofportions of two sections or lengths of pipe embodying the improvements.Fig. 2 is a transverse section of the seam shown in- Fig. 1, with theouter pipesection in plan View. Fig. 3 is an enlarged detail of aportion of the outer pipe-section of the form illustrated in Fig. 1.Fig. 4 is a side view of portions of two pipe sections, illustrating amodification in the construction of the improved seam. Fig. 5 is atransverse section on the line 5 5 of Fig. 4. Fig. 6 is a side view of aportion of a pipe-section, illustrating another modification 1n theconstruotion.

The piping-sections 10 and 11 employed in connection with the inventionherein described and shown are of the usual form with the ordinaryfolded seams 12 13, except that the lengths of pipe are uniform indiameter throughout, so that one will move longitudinally within theother.

Formed in the outer pipe 11 is a tongue 14, which may be formed at oneend of the section, as in Figs. 1,v 3 and 4, or intermediately thereof,as in Fig. 6, as may be preferred.

Formed transversely of the fold portion 12 of the inner pipe-section 10are recesses 15, into one of which the tongue 14 is adapted to beentered as the outer pipe-section is adjusted longitudinally over theinner section, as indicated in Fig. 1. The recesses 15 may be formedentirely through the fold 12, as in Figs. 4 and 5, or through one sideonly, as in Figs. 1 and 2, as may be preferred.

In operating the device the inner pipe-section is rotated within theouter section or the outer section rotated around the inner section, asthe case may be, until the tongue 14 is free from the recess 15 and thepiping adjusted to the required extent and the piping rotated back againuntil the tongue enters the nearest recess. Then the two pipe-sectionswill be firmly locked in position. Thus the piping may be adjustedlongitudinally to any required extent and locked in the adjustedposition.

The device is simple in construction, does not weaken the pipe, and doesnot in any manner affect the operation or materially increase theexpense of construction.

By this means the piping may be quickly and easily shortened and withoutcutting the lengths or otherwise injuring them or decreasing the value.

Having thus described the invention, what is claimed is An adjustableStovepipe comprising telescoping pipe-sections each having an ordinarylock-seam, one section having a plurality of transverse spaced recesseswithin the folds of the seam and the other section having a tongueadapted for engagement with any one of said apertures.

In testimony that we claim the foregoing as our own we have heretoaffixed our signatures in the presence of two witnesses.

CARL NELSON. Y CARL ALBERT NELSON. I-IARRY T. NELSON. Witnesses:

CLAUs FossEN, MARTIN HENDERSON.

